CN111440971A - Aluminum profile for controlling coarse crystal ring and manufacturing method thereof - Google Patents
Aluminum profile for controlling coarse crystal ring and manufacturing method thereof Download PDFInfo
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/043—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with silicon as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/047—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/05—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions
Abstract
The invention discloses an aluminum profile for controlling a coarse crystal ring and a manufacturing method thereof, wherein the aluminum profile comprises the following components in percentage by mass: si: 0.50-0.55%, Fe: 0.15%, Cu: 0.01%, Mn: 0.15-0.25%, Mg: 0.54-0.62%, Cr: 0.14-0.2%, Zn: 0.01%, Ti: 0.02 percent, less than or equal to 0.15 percent of the total content of other impurity elements and the balance of Al; wherein the Mn + Cr comprises the following components in percentage by mass: 0.3-0.42%; in the technical scheme of the invention, when casting ingredients, the content of Mn + Cr is preferably controlled to be 0.32-0.34%, and the ingot casting structure is controlled to be fine isometric crystal, so that the generation of coarse crystal rings can be effectively prevented; the extrusion type adopts a coarse crystal rapid extrusion process, water cooling is performed rapidly, the extrusion ratio is controlled to be 10-20, and the generation of coarse crystal rings can be reduced; the quenching process is controlled within 520 ℃/30-120min according to the diameter of the bar, the coarse crystal ring can not be deepened, and the crystal grains can not grow coarse.
Description
Technical Field
The invention relates to the field of aluminum alloy processing, in particular to an aluminum profile for controlling a coarse crystal ring and a manufacturing method thereof.
Background
With the rapid development of national economy, the aluminum processing industry occupies more and more important position in the national economy. The application of aluminum and aluminum processing products is more and more extensive, aluminum extruded sections are not only widely applied to the building industry, but also penetrate into the industrial field at present, and are widely applied to the civil fields of the transportation industry, the petroleum and gas industry, the machinery, the electronic industry and the like and the national defense industry fields of aerospace, ships, weapons and the like in recent years. Meanwhile, the quality requirements for aluminum processing products are also increasing.
Some extruded aluminum alloy products have coarse recrystallized grain structure regions, called macrocrystalline rings, formed on the macroscopic test pieces after solution treatment along the product periphery. Because the shape and the processing mode of the product are different, the ring-shaped, arc-shaped and other forms of coarse crystal rings can be formed. The depth of the coarse crystal ring is gradually reduced from the tail end to the front end to completely disappear. The forming mechanism is that a coarse recrystallized grain area is formed after heating and solution treatment of a sub-grain area formed on the surface layer of the product after hot extrusion.
The primary cause of macrocrystalline rings is:
1. the extrusion deformation is not uniform;
2. the heat treatment temperature is too high, the heat preservation time is too long, and crystal grains grow up;
3. the chemical composition of the alloy is unreasonable;
4. the extrusion deformation is small or the deformation is insufficient, or the deformation is in a critical deformation range, and a coarse crystal ring is easily generated.
The main reason for producing the coarse crystal ring by the 6061 aluminum alloy is that the aluminum alloy structure is not uniformly deformed in the hot extrusion process, the crystal boundary interface of matrix crystal grains is increased, new recrystallization crystal nuclei are generated, and the crystal nuclei grow rapidly to form the coarse crystal ring.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: overcomes the defects of the prior art, and controls the coarse crystal ring by reasonably adjusting the chemical composition distribution ratio and the casting process flow.
The technical scheme adopted by the invention for solving the technical problem is as follows:
the utility model provides an aluminium alloy of control coarse grain ring which characterized in that: the weight percentage composition is as follows: si: 0.50-0.55%, Fe: 0.15%, Cu: 0.01%, Mn: 0.15-0.25%, Mg: 0.54-0.62%, Cr: 0.14-0.2%, Zn: 0.01%, Ti: 0.02 percent, less than or equal to 0.15 percent of the total content of other impurity elements and the balance of Al.
Further, the Mn + Cr comprises the following components in percentage by mass: 0.3 to 0.42 percent.
Further, the aluminum alloy comprises the following components in percentage by mass: si: 0.52-0.54%, Fe: 0.15%, Cu: 0.01%, Mn: 0.18-0.22%, Mg: 0.58-0.6%, Cr: 0.16-0.8%, Zn: 0.01%, Ti: 0.02 percent, less than or equal to 0.15 percent of the total content of other impurity elements and the balance of Al.
Further, the Mn + Cr comprises the following components in percentage by mass: 0.33-0.39%.
A method for manufacturing an aluminum profile controlling a coarse crystal ring comprises the following steps:
step one, weighing raw materials except Ti according to the mass percentage of the components;
step two, placing the raw materials in the step one in a hearth, heating to the temperature of 730-;
step three, when the temperature of the aluminum liquid mixture is reduced to 700 ℃, adding a refining agent for refining;
step four, standing for 20min after the refining operation is finished in step three, keeping the temperature of the aluminum liquid mixture at 730-740 ℃ after slagging off, adding Ti into a chute at the front end of the casting equipment, and then casting and extruding the aluminum liquid into aluminum rods by adopting a horizontal hot top casting method;
step five, homogenizing the aluminum bar obtained in the step four, controlling the temperature at 510-520 ℃, preserving the heat for 10 hours, cooling the aluminum bar for 1-5min by using normal-temperature water, and then cooling the aluminum bar by strong wind in a furnace to obtain a homogenized aluminum bar;
step six, heating the extrusion cylinder and the extrusion die according to a coarse crystal rapid extrusion process and preserving heat;
step seven, performing aluminum bar heating treatment on the homogenized aluminum bar in the step five in a step-type heating mode, wherein the temperature of the head end of the aluminum bar is heated to 510-;
step eight, after the aluminum bar heated in the step seven is heated in a whole step-by-step manner, extruding the aluminum bar at the speed of 0.7-0.9mm/s according to the coarse crystal rapid extrusion process, and controlling the extrusion ratio to be 10-20 to obtain an aluminum profile;
step nine, in the extrusion forming process of the aluminum profile, carrying out water-cooling quenching cooling on the high-temperature hot extrusion profile by using on-line hot quenching equipment, and carrying out quenching cooling through a 10m water-cooling quenching channel at the speed of 520 ℃/30-120 min;
and step ten, aging at 220 ℃ for 3h, cooling to below 80 ℃ by adopting strong wind after the aging is finished, and naturally cooling to room temperature.
Further, in the seventh step, the aluminum bar is scalped before extrusion, and the scalping thickness is 4 mm.
Further, in step eight, when the extrusion is started, the speed of the front 200mm length is not too fast, and the general extrusion speed is 0.2-0.4mm/s, and when the rear product is completely extruded from the die, the speed can be uniformly increased to the maximum speed, so that the speed of the product is 2-2.5m/min, and the speed of the rear 200mm length is not too fast, and the general extrusion speed is 0.2-0.4 mm/s.
The invention has the following positive beneficial effects:
in the technical scheme of the invention, when casting ingredients, the content of Mn + Cr is preferably controlled to be 0.32-0.34%, and the ingot casting structure is controlled to be fine isometric crystal, so that the generation of coarse crystal rings can be effectively prevented; the extrusion type adopts a coarse crystal rapid extrusion process, water cooling is performed rapidly, the extrusion ratio is controlled to be 10-20, and the generation of coarse crystal rings can be reduced; the quenching process is controlled within 520 ℃/30-120min according to the diameter of the bar, the coarse crystal ring can not be deepened, and the crystal grains can not grow coarse.
Because the surface quality of the cast ingot influences the surface quality of the product and the distribution length of the extrusion tail, the surface of the cast ingot is not good, dirt can flow into the product, and the tail-shrinking length is increased, so that the cast ingot of the extruded product needs to be scalped, the surface is kept clean, and the quality of the extruded product is ensured.
Because ingot casting and recipient heating temperature are also very big to metal fluidity influence, heating temperature has changed the deformation resistance of metal, along with extrusion temperature's improvement, metal deformation resistance reduces, and metal flow inhomogeneity aggravates, and in the extrusion process, if recipient or mould temperature are low excessively, make the outer metal of ingot casting cool, also aggravated the flow of metal inhomogeneity for the length extension of the tail that contracts of extrusion rod, for preventing this kind of phenomenon from taking place, carry out the heat preservation in the extrusion process in operation and handle.
Because the extrusion speed is too high, the faster the metal flows, the more non-uniform the metal flow is, and in order to prevent the phenomenon, the tail end length can be controlled by adopting a terminal deceleration method in the operation.
Detailed Description
The invention will be further explained and illustrated with reference to specific examples:
example one
An aluminum profile for controlling a coarse crystal ring comprises the following components in percentage by mass: si: 0.50-0.55%, Fe: 0.15%, Cu: 0.01%, Mn: 0.16%, Mg: 0.54%, Cr: 0.14%, Zn: 0.01%, Ti: 0.02 percent, less than or equal to 0.15 percent of the total content of other impurity elements and the balance of Al.
Wherein the Mn + Cr comprises the following components in percentage by mass: 0.3 percent.
Example two
An aluminum profile for controlling a coarse crystal ring comprises the following components in percentage by mass: si: 0.52-0.54%, Fe: 0.15%, Cu: 0.01%, Mn: 0.15%, Mg: 0.54%, Cr: 0.15%, Zn: 0.01%, Ti: 0.02 percent, less than or equal to 0.15 percent of the total content of other impurity elements and the balance of Al.
Wherein the Mn + Cr comprises the following components in percentage by mass: 0.3 percent.
EXAMPLE III
An aluminum profile for controlling a coarse crystal ring comprises the following components in percentage by mass: si: 0.52-0.54%, Fe: 0.15%, Cu: 0.01%, Mn: 0.19%, Mg: 0.54%, Cr: 0.14%, Zn: 0.01%, Ti: 0.02 percent, less than or equal to 0.15 percent of the total content of other impurity elements and the balance of Al.
Wherein the Mn + Cr comprises the following components in percentage by mass: 0.33 percent.
Example four
An aluminum profile for controlling a coarse crystal ring comprises the following components in percentage by mass: si: 0.52-0.54%, Fe: 0.15%, Cu: 0.01%, Mn: 0.18%, Mg: 0.58%, Cr: 0.16%, Zn: 0.01%, Ti: 0.02 percent, less than or equal to 0.15 percent of the total content of other impurity elements and the balance of Al.
Wherein the Mn + Cr comprises the following components in percentage by mass: 0.34 percent.
EXAMPLE five
An aluminum profile for controlling a coarse crystal ring comprises the following components in percentage by mass: si: 0.52-0.54%, Fe: 0.15%, Cu: 0.01%, Mn: 0.2%, Mg: 0.59%, Cr: 0.17%, Zn: 0.01%, Ti: 0.02 percent, less than or equal to 0.15 percent of the total content of other impurity elements and the balance of Al.
Wherein the Mn + Cr comprises the following components in percentage by mass: 0.37 percent.
EXAMPLE six
An aluminum profile for controlling a coarse crystal ring comprises the following components in percentage by mass: si: 0.52-0.54%, Fe: 0.15%, Cu: 0.01%, Mn: 0.22%, Mg: 0.6%, Cr: 0.18%, Zn: 0.01%, Ti: 0.02 percent, less than or equal to 0.15 percent of the total content of other impurity elements and the balance of Al.
Wherein the Mn + Cr comprises the following components in percentage by mass: 0.40 percent.
EXAMPLE seven
An aluminum profile for controlling a coarse crystal ring comprises the following components in percentage by mass: si: 0.52-0.54%, Fe: 0.15%, Cu: 0.01%, Mn: 0.25%, Mg: 0.62%, Cr: 0.17%, Zn: 0.01%, Ti: 0.02 percent, less than or equal to 0.15 percent of the total content of other impurity elements and the balance of Al.
Wherein the Mn + Cr comprises the following components in percentage by mass: 0.42 percent.
Example eight
An aluminum profile for controlling a coarse crystal ring comprises the following components in percentage by mass: si: 0.52-0.54%, Fe: 0.15%, Cu: 0.01%, Mn: 0.22%, Mg: 0.62%, Cr: 0.2%, Zn: 0.01%, Ti: 0.02 percent, less than or equal to 0.15 percent of the total content of other impurity elements and the balance of Al.
Wherein the Mn + Cr comprises the following components in percentage by mass: 0.42 percent.
Example nine
A method for manufacturing an aluminum profile controlling a coarse crystal ring comprises the following steps:
step one, weighing raw materials except Ti according to the mass percentage of the components;
step two, placing the raw materials in the step one in a hearth, heating to 730 ℃, keeping the temperature, and standing for 15min after the raw materials are completely melted to obtain an aluminum liquid mixture;
step three, when the temperature of the aluminum liquid mixture is reduced to 700 ℃, adding a refining agent for refining;
step four, standing for 20min after the refining operation in step three, keeping the temperature of the molten aluminum mixture at 730 ℃ after slagging off, adding Ti into a chute at the front end of the casting equipment, and then casting and extruding the molten aluminum into an aluminum rod by adopting a horizontal hot top casting method;
step five, homogenizing the aluminum bar obtained in the step four, controlling the temperature at 510 ℃, preserving the heat for 10 hours, cooling for 1min by normal temperature water, and then cooling by strong wind in a furnace to obtain a homogenized aluminum bar;
step six, heating the extrusion cylinder and the extrusion die according to a coarse crystal rapid extrusion process and preserving heat;
step seven, performing aluminum bar heating treatment on the homogenized aluminum bar in the step five in a stepped heating mode, heating the head end of the aluminum bar to 510 ℃, heating the tail end of the aluminum bar to 520 ℃, and heating for 5 min;
step eight, after all the aluminum bars heated in the step seven are heated in a stepped manner, extruding the aluminum bars at the speed of 0.7 mm/s according to a coarse-grain rapid extrusion process, and controlling the extrusion ratio to be 10 to obtain aluminum profiles;
step nine, in the extrusion forming process of the aluminum profile, carrying out water-cooling quenching cooling on the high-temperature hot extrusion profile by using on-line hot quenching equipment, and carrying out quenching cooling through a 10m water-cooling quenching channel at the speed of 520 ℃/30 min;
and step ten, aging at 220 ℃ for 3h, cooling to 60 ℃ by adopting strong wind after the aging is finished, and naturally cooling to room temperature.
Further, in the seventh step, the aluminum bar is scalped before extrusion, and the scalping thickness is 4 mm.
Further, in step eight, when extrusion is started, the speed of the front 200mm length is not suitable to be too fast, and the general extrusion speed is 0.2mm/s, when the rear product is completely extruded from the die, the speed can be uniformly increased to the maximum speed, so that the speed of the product is ensured to be 2m/min, and the speed of the rear 200mm length is not suitable to be too fast, and the general extrusion speed is 0.2 mm/s.
Example ten
A method for manufacturing an aluminum profile controlling a coarse crystal ring comprises the following steps:
step one, weighing raw materials except Ti according to the mass percentage of the components;
step two, placing the raw materials in the step one in a hearth, heating to 740 ℃, keeping the temperature, and standing for 20min after the raw materials are completely melted to obtain an aluminum liquid mixture;
step three, when the temperature of the aluminum liquid mixture is reduced to 700 ℃, adding a refining agent for refining;
step four, standing for 20min after the refining operation in step three, keeping the temperature of the aluminum liquid mixture at 740 ℃ after slagging off, adding Ti into a chute at the front end of the casting equipment, and then casting and extruding the aluminum liquid into an aluminum rod by adopting a horizontal hot top casting method;
step five, homogenizing the aluminum bar obtained in the step four, controlling the temperature at 520 ℃, preserving the heat for 10 hours, cooling for 5 minutes by normal temperature water, and then cooling by strong wind in a furnace to obtain a homogenized aluminum bar;
step six, heating the extrusion cylinder and the extrusion die according to a coarse crystal rapid extrusion process and preserving heat;
step seven, performing aluminum bar heating treatment on the homogenized aluminum bar in the step five in a stepped heating mode, heating the head end of the aluminum bar to 515 ℃, heating the tail end of the aluminum bar to 525 ℃, and heating for 8 min;
step eight, after all the aluminum bars heated in the step seven are heated in a stepped manner, extruding the aluminum bars at the speed of 0.9mm/s according to a coarse-grain rapid extrusion process, and controlling the extrusion ratio between 20 to obtain an aluminum profile;
step nine, in the extrusion forming process of the aluminum profile, carrying out water-cooling quenching cooling on the high-temperature hot extrusion profile by using on-line hot quenching equipment, and carrying out quenching cooling through a 10m water-cooling quenching channel at the speed of 520 ℃/120 min;
and step ten, aging at 220 ℃ for 3h, cooling to 80 ℃ by adopting strong wind after the aging is finished, and naturally cooling to room temperature.
Further, in the seventh step, the aluminum bar is scalped before extrusion, and the scalping thickness is 4 mm.
Further, in step eight, when extrusion is started, the speed of the front 200mm length is not suitable to be too fast, and the general extrusion speed is 0.4mm/s, and when the rear product is completely extruded from the die, the speed can be uniformly increased to the maximum speed, so that the speed of the product is ensured to be 2.5m/min, and the speed of the rear 200mm length is not suitable to be too fast, and the general extrusion speed is 0.4 mm/s.
EXAMPLE eleven
A method for manufacturing an aluminum profile controlling a coarse crystal ring comprises the following steps:
step one, weighing raw materials except Ti according to the mass percentage of the components;
step two, placing the raw materials in the step one in a hearth, heating to 735 ℃, keeping the temperature, and standing for 18min after the raw materials are completely melted to obtain an aluminum liquid mixture;
step three, when the temperature of the aluminum liquid mixture is reduced to 700 ℃, adding a refining agent for refining;
step four, standing for 20min after the refining operation in step three, keeping the temperature of the aluminum liquid mixture at 735 ℃ after slagging off, adding Ti into a chute at the front end of the casting equipment, and then casting and extruding the aluminum liquid into an aluminum rod by adopting a horizontal hot top casting method;
step five, homogenizing the aluminum bar obtained in the step four, controlling the temperature at 515 ℃, preserving the heat for 10 hours, cooling for 3min by normal temperature water, and then cooling by strong wind in a furnace to obtain a homogenized aluminum bar;
step six, heating the extrusion cylinder and the extrusion die according to a coarse crystal rapid extrusion process and preserving heat;
step seven, performing aluminum bar heating treatment on the homogenized aluminum bar in the step five in a stepped heating mode, heating the head end of the aluminum bar to 513 ℃, heating the tail end of the aluminum bar to 523 ℃, and heating for 6 min;
step eight, after all the aluminum bars heated in the step seven are heated in a stepped manner, extruding the aluminum bars at the speed of 0.8mm/s according to a coarse-grain rapid extrusion process, and controlling the extrusion ratio to be between 15 to obtain aluminum profiles;
step nine, in the extrusion forming process of the aluminum profile, carrying out water-cooling quenching cooling on the high-temperature hot extrusion profile by using on-line hot quenching equipment, and carrying out quenching cooling through a 10m water-cooling quenching channel at the speed of 520 ℃/60 min;
and step ten, aging at 220 ℃ for 3h, cooling to below 80 ℃ by adopting strong wind after the aging is finished, and naturally cooling to room temperature.
Further, in the seventh step, the aluminum bar is scalped before extrusion, and the scalping thickness is 4 mm.
Further, in step eight, when extrusion is started, the speed of the front 200mm length is not suitable to be too fast, the general extrusion speed is 0.3mm/s, when the rear product is completely extruded from the die, the speed can be uniformly increased to the maximum speed, the speed of the product is ensured to be 2.3m/min, the speed of the rear 200mm length is not suitable to be too fast, and the general extrusion speed is 0.3 mm/s.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications, equivalent variations and modifications made to the above embodiment according to the technical spirit of the present invention still fall within the scope of the technical solution of the present invention.
Claims (7)
1. The aluminum profile for controlling the coarse-grain ring is characterized by comprising the following components in percentage by mass: si: 0.50-0.55%, Fe: 0.15%, Cu: 0.01%, Mn: 0.15-0.25%, Mg: 0.54-0.62%, Cr: 0.14-0.2%, Zn: 0.01%, Ti: 0.02 percent, less than or equal to 0.15 percent of the total content of other impurity elements and the balance of Al.
2. The aluminum profile for controlling the macrocrystalline ring as claimed in claim 1, wherein the mass percentage of Mn + Cr is as follows: 0.3 to 0.42 percent.
3. The aluminum profile for controlling the macrocrystalline ring as claimed in claim 1, wherein the aluminum profile is characterized in that the aluminum profile comprises the following components in percentage by mass: si: 0.52-0.54%, Fe: 0.15%, Cu: 0.01%, Mn: 0.18-0.22%, Mg: 0.58-0.6%, Cr: 0.16-0.8%, Zn: 0.01%, Ti: 0.02 percent, less than or equal to 0.15 percent of the total content of other impurity elements and the balance of Al.
4. The aluminum profile for controlling the macrocrystalline ring as claimed in claim 3, wherein the mass percentage of Mn + Cr is as follows: 0.33-0.39%.
5. The aluminum profile manufacturing method for controlling the macrocrystalline ring as claimed in any one of claims 1 to 4, comprising the following steps
Step one, weighing raw materials except Ti according to the mass percentage of the components;
step two, placing the raw materials in the step one in a hearth, heating to the temperature of 730-;
step three, when the temperature of the aluminum liquid mixture is reduced to 700 ℃, adding a refining agent for refining;
step four, standing for 20min after the refining operation is finished in step three, keeping the temperature of the aluminum liquid mixture at 730-740 ℃ after slagging off, adding Ti into a chute at the front end of the casting equipment, and then casting and extruding the aluminum liquid into aluminum rods by adopting a horizontal hot top casting method;
step five, homogenizing the aluminum bar obtained in the step four, controlling the temperature at 510-520 ℃, preserving the heat for 10 hours, cooling the aluminum bar for 1-5min by using normal-temperature water, and then cooling the aluminum bar by strong wind in a furnace to obtain a homogenized aluminum bar;
step six, heating the extrusion cylinder and the extrusion die according to a coarse crystal rapid extrusion process and preserving heat;
step seven, performing aluminum bar heating treatment on the homogenized aluminum bar in the step five in a step-type heating mode, wherein the temperature of the head end of the aluminum bar is heated to 510-;
step eight, after the aluminum bar heated in the step seven is heated in a whole step-by-step manner, extruding the aluminum bar at the speed of 0.7-0.9mm/s according to the coarse crystal rapid extrusion process, and controlling the extrusion ratio to be 10-20 to obtain an aluminum profile;
step nine, in the extrusion forming process of the aluminum profile, carrying out water-cooling quenching cooling on the high-temperature hot extrusion profile by using on-line hot quenching equipment, and carrying out quenching cooling through a 10m water-cooling quenching channel at the speed of 520 ℃/30-120 min;
and step ten, aging at 220 ℃ for 3h, cooling to below 80 ℃ by adopting strong wind after the aging is finished, and naturally cooling to room temperature.
6. The method for manufacturing the aluminum profile for controlling the macrocrystalline ring according to the claim 5, wherein in the seventh step, the aluminum bar is scalped to a thickness of 4mm before extrusion.
7. The aluminum profile manufacturing method for controlling the macrocrystalline ring as claimed in claim 5, wherein in step eight, when the extrusion is started, the speed of the front 200mm length is not too fast, the general extrusion speed is 0.2-0.4mm/s, when the rear product is completely extruded from the die, the speed can be uniformly increased to the maximum speed, the speed of the product is ensured to be 2-2.5m/min, and the speed of the rear 200mm length is not too fast, the general extrusion speed is 0.2-0.4 mm/s.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115216672A (en) * | 2022-07-14 | 2022-10-21 | 栋梁铝业有限公司 | Aluminum alloy section with complex section and manufacturing method thereof |
| CN115537612A (en) * | 2022-10-27 | 2022-12-30 | 广东中色研达新材料科技股份有限公司 | 6013 type aluminum alloy and processing technology thereof |
| CN115948681A (en) * | 2022-12-21 | 2023-04-11 | 广东兴发铝业有限公司 | Aluminum profile for relieving heat radiator and extrusion production method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1933560A1 (en) * | 1969-07-02 | 1971-02-11 | Vaw Leichtmetall Gmbh | Process for the production of facade panels from light metal sheets |
| JPS6152346A (en) * | 1984-08-22 | 1986-03-15 | Sumitomo Light Metal Ind Ltd | Free cutting aluminum alloy tube for spacer ring and its manufacture |
| CN104357719A (en) * | 2014-12-09 | 2015-02-18 | 西南铝业（集团）有限责任公司 | 6061 alloy and preparation process thereof |
| CN105063441A (en) * | 2015-08-27 | 2015-11-18 | 辽宁忠旺集团有限公司 | Manufacturing technique for improving electrical conductivity of aluminum alloy tubular product |
| CN105256193A (en) * | 2015-11-30 | 2016-01-20 | 辽宁忠旺集团有限公司 | Process for avoiding coarse-grain rings of 6061 aluminum alloy bars and rods |
| CN106636764A (en) * | 2015-11-03 | 2017-05-10 | 重庆天彩铝业有限公司 | Ultra-fine grain 6061 aluminum alloy and preparing method thereof |
| CN107326227A (en) * | 2017-08-14 | 2017-11-07 | 山东南山铝业股份有限公司 | Rail transit vehicle body skirtboard aluminium alloy extrusions and its manufacture method |
| CN109487128A (en) * | 2018-12-12 | 2019-03-19 | 山东南山铝业股份有限公司 | A kind of rail transit vehicle body top cover side bar aluminium alloy extrusions and its manufacturing method |
-
2020
- 2020-04-29 CN CN202010359185.0A patent/CN111440971A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1933560A1 (en) * | 1969-07-02 | 1971-02-11 | Vaw Leichtmetall Gmbh | Process for the production of facade panels from light metal sheets |
| JPS6152346A (en) * | 1984-08-22 | 1986-03-15 | Sumitomo Light Metal Ind Ltd | Free cutting aluminum alloy tube for spacer ring and its manufacture |
| CN104357719A (en) * | 2014-12-09 | 2015-02-18 | 西南铝业（集团）有限责任公司 | 6061 alloy and preparation process thereof |
| CN105063441A (en) * | 2015-08-27 | 2015-11-18 | 辽宁忠旺集团有限公司 | Manufacturing technique for improving electrical conductivity of aluminum alloy tubular product |
| CN106636764A (en) * | 2015-11-03 | 2017-05-10 | 重庆天彩铝业有限公司 | Ultra-fine grain 6061 aluminum alloy and preparing method thereof |
| CN105256193A (en) * | 2015-11-30 | 2016-01-20 | 辽宁忠旺集团有限公司 | Process for avoiding coarse-grain rings of 6061 aluminum alloy bars and rods |
| CN107326227A (en) * | 2017-08-14 | 2017-11-07 | 山东南山铝业股份有限公司 | Rail transit vehicle body skirtboard aluminium alloy extrusions and its manufacture method |
| CN109487128A (en) * | 2018-12-12 | 2019-03-19 | 山东南山铝业股份有限公司 | A kind of rail transit vehicle body top cover side bar aluminium alloy extrusions and its manufacturing method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115216672A (en) * | 2022-07-14 | 2022-10-21 | 栋梁铝业有限公司 | Aluminum alloy section with complex section and manufacturing method thereof |
| CN115537612A (en) * | 2022-10-27 | 2022-12-30 | 广东中色研达新材料科技股份有限公司 | 6013 type aluminum alloy and processing technology thereof |
| CN115537612B (en) * | 2022-10-27 | 2023-06-27 | 广东中色研达新材料科技股份有限公司 | 6013 type aluminum alloy and processing technology thereof |
| CN115948681A (en) * | 2022-12-21 | 2023-04-11 | 广东兴发铝业有限公司 | Aluminum profile for relieving heat radiator and extrusion production method thereof |
| CN115948681B (en) * | 2022-12-21 | 2024-04-16 | 广东兴发铝业有限公司 | Aluminum profile for relieved tooth radiator and extrusion production method thereof |
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